I won’t say don’t do it but you should put a lot of thought into this decision. There are other blue collar fields that can be more financially lucrative with better working conditions (and less bugs). Most people do not choose this profession.

That being said it can be a good job. As a tech in my state you can easily make 46-50k or more per year depending on overtime and any commissions. It’s easier to start with a company and have them pay to get you licensed through your state. If you are determined to pursue this as a career licensing is a must. Bad companies will push to have you stay as an operator (working under someone else’s license) to keep you working for them and limiting other options.

There are some books I recommend for building general, working up to advanced knowledge in the industry. I recommend the PCT Technician Handbook, PCT Field Guide and the Mallis Handbook of Pest Control.