For CWNA, the study guide and practice tests are all that I would recommend to pass the exam. The guides contain really good information although I'm sure you'll know a lot of it already. For the CWNP, CWSP and CWAP, I'd recommend the study guide and practice tests again, but with some online research for any topics you're struggling with. The CWAP exam is quite tough so you'll need to get hands on with packet captures. But in general I found most exams to be fair and related to the real world, no vendor specific nonsense or horrible trick questions.
Once those are done the CWNE requires three short essays (less than 1000 words). And some other form of input, such as a white paper or blog, the CWNP website has this detailed but don't worry too much about that now.
For the CWNA, I'd start with the study guide and see how you take to it. I found it really useful throughout my career. Feel free to reach out in the future if you have any questions.
As a landlord (I own two properties) and as someone who also works full time I agree with him.
It may take up some time but ultimately it's an investment.
Landlords like myself aren't (typically) struggling, so we should pay more tax, especially now as the country needs it. I am proud to say I don't tax dodge and pay what I owe. But unfortunately there are many loopholes that can be exploited to avoid paying tax. Just a few weeks ago someone was telling me how I should put my properties under a LTD company to avoid paying tax (I didn't and won't). I hope the Labour government does more to close these loopholes for tax dodgers.