MJ vs. Concentrate Effects

[HappyHippie]

I know the very basic differences between a Sativa and an Indica experience, and have found the mind high from Sativa much more suitable for my needs. I am not very experienced in the field of concentrates, though I have tried a few types of hash, and I was wanting to use an alcohol solvent method to make one (not really sure what it's called), and I was wondering if I would get a noticable difference when using either Indica or Sativa or a hybrid. I am also wanting to know if a med license lets you legally posses a concentrate or if there is some sort of seperate license for it (a special license is required in Cali but I am less familiar with Washington's laws).
Also this is my first post so if I did anything wrong please let me know.