A warm welcome from me, too! If you astral projected as a child, you should find it easier to pick up the threads. The link given by mslemon is very helpful. Another important thing is to make sure that you have have purged all negative thoughts (anger, jealousy, etc.) and have only positive ones (love, compassion, etc.) before you project. Clearing and balancing your chakras will help in this. This will ensure projection to pleasant realms of the astral.