When I first started playing Pathfinder Kingmaker, the complex rules required me having a constant tab opened up on d20pfsrd.com

This actually made the game far more enjoyable as the reference could nearly always apply to the ingame mechanics of Pathfinder. Is there another website as well done as d20pfsrd.com to help me learn the mechanics of D&D 5e?

Also an opinion of mine directed to the developer, but there are some pretty poorly explained mechanics that are quickly dissipating my interest in the game.

For example at level 3, I need to choose another Ranger Archetype; and under Shadow Tamer there is a description under Dark Slayer that is far from helpful:
"When attacking a creature with superior darkvision with a weapon, you add your proficiency bonus to your damage."

What is my proficiency bonus? my first though is that it was my dex bonus to damage on my bow or dual wielding shortswords but I have that added already....so what is my proficiency bonus?

A recent example of another unhelpful description is the "Blur" spell description:
"Makes you blurry and harder to hit for up to 1 minute"
Well okay, that doesn't really help me decide how effective it is, so let us press "ALT" to hopefully get a better idea:

"Grants: Blurred"
"Attacks on creature have disadvantage"

Well that isn't even slightly helpful. Sure if I'm familiar with the D&D 5e rules I might know this ability well, but this is a useless description to me, does it grant a 20% miss chance against opponents as in Pathfinder? Without having the necessary numbers, I'm just wildly guessing.

It would also be helpful to see the Difficulty Class of a particular skill before attempting it (ie seeing the roll required to make a jump before making the jump or getting an idea on the difficulty of a trap that needs to be disarmed).

You are asking for two 5e game terms, the only problem is you are not familiar with them.

Your proficiency bonus is a general measure of your characters' capabilities, and you can look at it on your character sheet, it's under the portrait. It's +2 for levels 1-4, +3 for levels 5-8, +4 for 9-10th level. You add it to everything "you have proficiency with", from skills to attack rolls and saving throws.

Having advantage/disadvantage on a roll means you roll two D20 and choose the best/worst outcome. So, if you have Blur on you, any creature that attacks you has to roll 2D20 and choose the lowest one for its attack roll. Advantage and disadvantage cancel out each other: if one condition gives you advantage and another disadvantage you make a normal roll. Also, I think (though I'm not an expert on 5e) the if you have 2 advantage conditions and one disadvantage, you roll with advantage.

I'm not sure but I think this is explained on the in-game tutorials. In any case there's a SRD for 5e:

https://www.5esrd.com/

Thank you so much for this information and the link (it looks promising already)!

I'm not familiar with the mechanics at all with D&D 5e, and figured that they might have something in common from earlier rulesets like those in Pathfinder which doesn't seem to be the case.

So Advantage and Disadvantage are conditions which cause you to roll two dice and take the better roll of the two (if you are at an advantage) or the worse one of the two (if you are at a disadvantage). I will need to read up on that link you provided on what condtions cause an advantage or disadvantage but this has been very helpful.

Also appreciate the explanation on proficiency (which I've now spotted under the portrait). So I could of added this bonus damage (which seems to increase with level), if I happened to be underground and attacking a creature with superior darkvision, so that skill makes more sense now.

I see there is an in-game tutorial under the journal tab (you are right, they do explain proficiency briefly there)...and a direct link to the system reference PDF document, which at 403 pages should help.

Many thanks once again!

Solasta is based on the 5E SRD for DnD.

https://www.5esrd.com/

It do is the case, as 5e is in fact based on 3.5, but is a synthesis, rather than a bad simplification for MMOs like 4e.

Proefficiency is a number to add to the skills, estimated along the character level, instead of all the many points we had to put in our profesionnal/chosen skills.
Advantage/disadvantage is a system instead of all the bonus/malus the GM had to compute.

5E does away with a LOT of the "behind the scenes" admin work required of the DM/GM. From the players perspective, it is not HUGELY different. Just play, and you'll be good.

In-game it's easy to identify some of them, thanks to the green+/red- miniature dice next to the cursor. For example, if you are hidden you'll see a green + next to any enemy you are pointing your projectile weapon at (unless the enemy is unlit, e.g., because that gives you disadvantage). Also, it's helpful choosing to see 3D dice rolls, you can intuitively learn a lot of mechanincs from there.

Solasta's tutorial can certainly be improved but maybe writing game terms in bold or italic characters would help avoiding confusion. In any case, 5e is not a particularly rules-heavy system, most veterans should have little trouble.

I backed Solasta in Kickstarter because it looked cool and I wanted to learn at least the 5e basic rules. My group's favourite system is Pathfinder but I wanted to be able to play 5e at conventions if need arises :P I can say that Solasta satisfies both of my needs. Also, devs seem like cool guys.

Ahhh, I was wondering what that green + and red - were...I figured it was just do do with a target being lit/unlit...so that is when you know you are at an advantage/disadvantage. So stealth gives you an advantage...I don't know yet how that ties in with sneak attacks, but I've only just started reading the documentation (just mostly covered race and class information in the reference pdf I downloaded).

The dice roll goes a bit fast for me to understand what is happening, so I tend to look at the window in the top right corner for roll information (maybe that will change as I understand the rules more). Pathfinder Kingmaker I feel had the best implementation of showing you the underlying mechanics of rolls (attack & damage), so when I didn't understand the game, I enjoyed dissecting the roll information to figure out what had happened (I attached an example of an attack roll, just mousing over figures in the battle history will bring up pop-ups for both the attack and damage rolls). I'm unfortunately suspicious, as game forums have shown me that people are all perfectly reasonable until you criticise an aspect of the game, then they decend upon you like a pack of starving wolves to show you the 'error' of your ways. I think a good measure of a game forum and it's developers are how they deal with crticism (I'm not talking about those being offensive for fun mind you, just a general dislike for certain features or their implementation).