Another try at a product-recommendation question. This one includes links to relevant meta articles, and advice for improving it.
Your question appears to be looking for productproduct, serviceservice, or learning materialslearning materials recommendations. ServerFault considers these off-topic because they're too broad to answer, or too localized to your situation to be of use to anyone but you. They're also massive spam magnets. Please refocus this question to solve a specific technical problem, and don't focus on which specific product/service to use.
Note, the learning-materials link will go to a new meta-post describing why we consider education, something all sysadmins should be doing constantly, to be off-topic. We don't seem to have a good meta-post for that yet.