Hi there,
Just gotta add my 2 cents.... since I love lifting weights! Been trying to get motivated to get my butt down to the Y this morning myself. Good advice above. What I've found that has helped me (now remember, I am 43 and female so bulking is HARD) is lifting to FAILURE. My favorite body part to train is biceps and the exercises I use I always go to failure. Example - barbell 40 lbs 10 reps narrow grip. Then wide grip, however many reps I can lift, usually 8-9. I'm doing other stuff to give my biceps a chance to rest before doing them with a different exercise.Then later in the session I'll do alternating curls with 17.5 DB 10 reps. Sometimes I'll throw in hammer curls, though I know they focus more on forearms.
I've noticed that other body parts I don't train to failure don't respond as well. But then again, I don't want bulked inner thighs that rub together either! That's what is working for me now. I may have to change things up in a while.
Also, something you may have to take into consideration is "eating clean" and eating enough. I asked about this in another post and received a terrific response. Here's the post:
http://www.healthboards.com/boards/showthread.php?t=301988
What I've read is 1.5 grams of protein per pound of bodyweight is what you need to eat for bulking. Eating 6 meals a day, making sure your post workout meal has protein and carbs, and limiting cardio during bulking are the basic guidelines.
Two rules I'm sure you know: always allow at least 48 hours before training a muscle group again and never train an injured muscle (unless by doctor's instruction for rehab).
And something you gotta remember.... just 'cause something works for one person doesn't mean it works for another! When a routine you are using isn't working or stops working, then it is time to change it up.
Good luck to ya!
~zeez
PS Ya gotta get plenty of sleep too!