Guayo,
I've been using TW for quite while now: my current strategy is to use lots of wikis and to put them in a GitHub folder. If I want to publish the TW I can do, I use the GitHub desktop tool.
When I want a new wiki i either save one of my existing ones with a different name or visit TiddlyWiki.com and download the whole page. I can then make suggestions to change TW and have all the help on hand.
There are a couple of macros on TW.com that the empty doesn't have; thumnail macro and the documentation macros.
It's a little bit more risky, you need to watch out for clicking the back button on the browser, but i just save the TW when i am making a big change by clicking the red tick.
Sometimes I will download Tobias' plugins wiki and play with that.
Remember you can drag tiddlers to your wiki from another wiki's sidebar, or from any wiki link. I do that a lot.
I don't bother with external images, I take screenshots and drag them into my TW.
I have also started using encripted wikis. I was surprised by the feeling of producing "secret" stuff, i felt liberated, and that surprised me.
@Jeremy, given that TW is explicitly "a non-linear personal web notebook" I more could be made of the "personal". Would it be heresy to propose considering "a non-linear personal / private / web notebook" -- or at least re-emphasising the private. I think its a great feature. I've put data onto my laptop that I wouldn't have otherwise.
Alex