If you’re going to get into any sort of technical job, you’re going to have to ask questions. A lot of questions. Unfortunately, too few people understand how to ask questions properly. Asking questions is a skill. It has to be learnt.
CMS is extremely important strategically for any web company. About 35% of web sites use a CMS, and the top ones are all PHP (WordPress on its own is more than 20% of all web sites). In other words, if you care about the market share of your web platform, you need a good CMS running on it.