I'd like to give some advice. I weight train 4 times a week and am ectomorph/mesomorph. You can build solid muscle no matter what your body type is.
Train each body part once a week
Train 2 parts in each session e.g. biceps/triceps
train 3-4 times a week
Train for no more than 45 mins a session
You should be able to do no more than 8-10 reps before failure. If you can do more, the weight is too light.
4-10 reps. 6/7 per body part sets. 2 minute rest between sets
Get around 1 gram protein per lb bodyweight a day.
Take 30-60 grams glucose post-workout
5grams creatine post-workout
Keep workout logs and get better every single workout, either more weight or more reps - very important
For bulking, get at least 3000 calories a day. This depends on your weight at the moment, could be more.
I will be posting exercise articles at my blog soon as I have built a body I am very pleased with today (used to be very skinny too). This is a simple post but effective if implemented.
All the best