look for jobs with purely technical interviews.
I am currently working as a SW Engineer for the first time. The interview process where I am started with an online test (HackerRank) then 3 onsite technical interviews (coding challenges). Every one who passes the online test gets an interview (by phone if distances make onsite impractical). The interviewers were supportive and helpful during the course of the interviews, trying to give me opportunities to prove I can complete the task.
Try and find some similar interviews. If you pass then you have found somewhere with a culture of helping you succeed. If you fail you have got the chance to discuss coding challenges with people working in the industry.
I'd say interviews are a good way to judge a company; If the intiviewers are supportive and happy to explain things when you get stuck then there is a good chance the job will be a good place to learn the trade.
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