My suggestion would be to get a plan review checklist. These can be purchased from organizations such as ICC, NFPA, IAEI, ect. Or, make one of your own. While I feel checklists for inspections are not all that useful, they can be useful when "learning" or new to plan review.
The key to doing a good plan review is to be consistent and comprehensive. When in doubt, request more information or engineering for an unclear detail.
Don't be afraid to contact the architect or engineer to receive guidance or clarity on a detail or document submittal.
The plan examining is the point during the construction process where 99% of problems and non-compliant issues can be found and corrected with the least amount of cost and delay. Take your time with plans. Never rubber stamp even the simplest of installations.
Also, get yourself a good magnifying glass, calculator, architecural ruler, and make sure you have a good drafting table or large working surface so that large plan sets can be looked at comfortably and for an extended period of time.
