Always lean towards lower weights to start with
When starting use a weight you can handle comfortably.
Start with an empty barbell or very light dumbbels.
Do a set of 5 reps with perfect form (as best you're able to).
If it feels too easy, add 2.5-5 kg (5-10 lbs) and do another set.
Repeat untill it starts to feels like it has some weight on it or your speed slows.
This is your starting weight.
It's better to be extremely conservative when selecting your starting weights.
If you are unsure, start too light rather than too heavy.
It is better to have an easy first week than to be too sore to train again.
Your weights will gradually increase and you'll be on your optimal weights soon.
