Here is a Integration by Parts helpsheet I created and uploaded on Scribd. Integration by Parts is a really useful technique, in fact it is one of the two key integration techniques in H2 Maths. The other technique is Integration by Substitution.
The Humongous Book of Calculus Problems
This book is really “humongous”. If you need to source for practice problems for Calculus, this is a good place to start. 🙂