re: Is there anything that I should know before trade school?

It depends on what you are interested in. If you like the outdoors ( both hot and cold temps) then consider carpentry, hvac, welding, plumbing, etc. If you had rather be in an indoor environment than computers, electrical technology, robotics , etc.

My two sons both have associates degrees in electrical technology. One works for a nuclear plant as a nuclear planner…and the other works for a company making hypersonic missiles.. both making 6 figures. Neither one had any college debt.

So … start trying to decide your interests and do lots of research, visit your local community college, check for various apprenticeships. Good luck!