i'm a bodybuilder. i love weight training! it's a common type of strength training
I've been think of starting weight training!  What should I know?
so basically you will do different exercises using weighted bars, dumbbells or weight stacks
Are there certain precautions I need to take?
yes, i would say first you need to contact your doctor, i would also advice doing classes at first so you can learn how to do things correctly
What do you think is most effective strength training exercise?
i would say bodypump and HIT. Also strength training for sports and physical activities is popular
Are there strength training exercises I can do without equipment?
yes, you can do endurance training such as yoga and pilates
That sounds like a great way to get started!  Is yoga easy?