Now, my HTML skills are a bit rusty (what do you expect, with all these fancy apps nowadays…) and I don’t find I need to use ’em too much, but sometimes, you just need to.
If, like me, you need a quick refresher on the basics I can strongly recommend the w3schools website – there’s practice examples and all sorts. It’s not pretty, but it does what it says on the tin.
And to get a feel for what your gobbledeegook is gonna look like, I like this real-time HTML editor.
And all for free.