what kinds of feats can they take... do i find them in beasteary or can i use ones from core and apg like dodge or something and how do there evolutions work... do i have to repick the ones i have already chosen and evolution points is it 1 new point a turn or at lvl 2 do i get a new 4 points
I am posting on my Eidolons alias so you can have a look. He aint optimized or anything but eh.
Basically for feats: Any feat he qualifies for he can take, but dont bother with armor ones as they cannot wear armor period.
Evolution points: Each time your summoner levels your Eidolon levels, when that happens your Evolution Pool increases. At that time you can change which evolutions your Eidolon has (but from what I understand you cannot remove the ones from your base form NOR change your base form, please correct me if I am wrong). So at level 1 you have 3 points, at level 2 you go to 4. At that time you can strip him of all Evolutions and spend 4 points worth of Evolutions. This keeps happening as you gain levels. The Evolution poitns are a pool. Each line in the table shows how many MAX Evolution points your Eidolon has at a given level (at level 1 they have a pool of 3, level 2 they have a pool of 4) You must choose to use those point at level up, and they are locked in until your next level up.
Feats never change for the Eidolon, nor do your skills. Once chosen they are set, just like a PC. Also remember that your Eidolon has a set of base skills, and then you can choose 4 skills to become class skills as well.
Think of an Eidolon as a PC and it works out the best.
Water! Fire! Air and Dirt! F&%#ing eidolons! How do they work?
But in all seriousness, eidolons can take any feat that they qualify for just like any other character. Evolution points are listed as totals at that level like every other stat in the class chart (4 total at level 2).