Look at joining a gym, but need some advice?

Ryugin
So I'm looking a joining a gym to help me get in a little better shape. But I need some advice on this, like what I should work on there but more importantly I need a good diet plan.

If someone out there knows of a good one, it would be nice to have a link to the plan, or would the gym be able to help me with this?
Look at joining a gym, but need some advice?
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