I went through pre searing pretty fast, and I think I missed a lot of skills gained from completing quests. Will I have opportunities to get those skills later in the game. I want to get all the skills I am able to.
You bet you can still get them all! You can get skills from Quests, Skill Trainers, and from 'Capture Sigs' used on bosses later in the game. Back in the beta days when Pre-Searing was first introduced that was a problem.. You could only get Rez Signet in 'Pre'.