Hi @dlyons Thankyou so much! 
There are some companies that give those algorithms as part of your interview process, but its not common in Australia for “Web Development” maybe a little more in backend and software. Felipe my partner got them for his interviews as more of a backend guy, but he still thinks that have nothing to do with his job. He says of course you need to develop the logic you need to solve problems, but the algorithms are more math based and he doesn’t really experience having to think that way, and he isn’t even good at maths!
I do think mini-projects are the best way, Free Code Camp could have built up with more mini projects to help us understand the more basic ideas, I have noticed that treehouse does this.
We are building themes from scratch, so far I have done two websites for them.
www.vivacollections.com.au
https://ssssh.com.au/
You can see its more basic, the rest of the time I am doing HTML e-sigs, small landing or holding pages, migrating sites, changing or fixing bugs that I can on other websites they have done, moving things around and changing things. He has advised me they will slowly build me up with my worpdress. Of course i am eager to jump in more to multi-page sites as soon as possible so I am developing a free one for a coffee shop using wordpress so I can show my boss at the end!
I’d love the name of that book thanks