Hi @jacobkim9881 , welcome to the FCC forums!
So I quickly skimmed over your resume, and wanted to give some feedback.
The first thing I want to bring up is how you structure your resume is usually subjective to the job your applying to. For example your resume should be different if your applying to a large company, rather than a small one.
- The top of your resume is usually one of the most important areas, as regardless of who is reading it, its the first thing most people read. As such I recommend pointing out the more important traits for the given job. Right now you mention how your a “career changed frontend developer”, this may be important to you, but it might not be that important for the job your applying to. The “frontend part” is important if your applying to a front-end job, aswell, but you also mention skills with React, JQuery, design, photoshop and gimp, which is just as important, if not more relevant to most jobs you will be applying to.
You also mention your attentiveness to English grammar which I think is important for jobs that require that skill, which a lot of “global” jobs require. Do keep that in 
One of the best approaches to specifying which skills you promote the most on your resume should be determined by the job requirements. If the job your applying for asks for X, Y and Z, saying you have skills with X, Y and Z wont hurt haha. The more “check-boxes” you directly check, the better.
I personally wouldn’t mention this directly, unless the job your applying for related to such topics. For example if your applying to a company that helps people change careers, then mentioning it would be very relevant. Otherwise its a cool “story” of how you get where you are now, but I personally would promote what you can give to a company in terms of skills and experience, rather than specifically how you got where you are now (or were you want to go).
If you have a degree, you should almost always mention it. Web development is becoming more accessible to a lot of people, increasing competition for “entry jobs”. Many companies cut down on applications by automatically weeding out applicants without degrees. Its not exactly fair, but it is a cheap and easy metric. As such having a degree, even one not directly related to web development, is always a big plus.
I like how you mention how you learned statistics with your degree, which is something I’d probably work on next. As being able to leverage your previous experience learned from your degree, with web development should be a big advantage. I recommend looking into some data science topics to at least get familiar as its another angle you can apply for jobs that not everyone has.
Not 100% sure what your asking here. If your asking if you should mention how much experience you have in terms of months/years you have with each technology you should if you either have a lot of experience, or you meet a jobs requirements. If you have say 3-6 months of experience and the job your applying to asks for like 5+, then not mentioning it might be better. Obviously don’t lie if asked, but don’t promote your own short comings if you can.
Your resume should be focused on selling you to a company. Do your research on the job, and the company and see how much you can “sell” yourself as possible. Obviously you might be missing out on required skills which will hinder your chances, but see those shortcomings as paths to learn something new 
Good luck with your job search!