I bought the sw d20, and got the last of the new edition books

Yea, its true that i prefer star wars to fantasy but i didnt know if it was a good game or not...and d&d was too expensive

(the reason i dont post too often on nwn forums for example is that i have nothing to say, im not gonna tell any naablet my best builds and the whole forum is mostly about single player. The reason for this pic is that i just like dual weps and darth revan). Now that i have read about 100 pages of the book, i have some troubles understanding some things:
What does it mean that some skills say "you can take 10 but not 20"?
And do the force points regenerate at all(it would suck to be a level 20 jedi without any force)?