What you basically have, is a bullet list for categories, and a "bullet list" for posts (it is not actually a bullet list, but in the sense of information retrieval, it is a bullet list.).
In a sense, your blog does not have a classic blog format; there is very little to indicate that your posts are time-connected and therefore sequential. Nothing wrong with that, just an observation. But if the blog is a sort of ongoing visual research repository, you might want to consider adding dates or other markers of time.
This is fundamentally a question of information architecture, and I will not go into the visual language as such.
You have a frightening amount of categories. You might want to try to make it more systematic; a more hierarchical structure. I would imagine that – say – prototyping might well be a sub-category of process etc. Try to make this clearer; try to weight the most important categories. If you find this impossibly difficult, you need to give a better method of browsing the categories.
For basic information retrieval, there are (very basically) three ways of looking at it:
- "Need to know": The guiding, step-by-step information dissemination.
A highly controlled hierarchy of information, basis in presumptions
of what the user wants and needs. In a way, you could say newspapers
do this; with headings, ingress, and main text, and books with
- The "phonebook". The user know what s/he is looking for, and are very
specific. Words, sorting by time, place, etc.
- Exploration of information, data and content. Some level of
happenstance; the user will dilly-dally around, exploring and
following unexpected paths. I am assuming this is what you are aiming
for. It is very hard to create, often satisfying to play with, and
always with a more hierarchical alternative. It seems sitemaps are
out of fashion, but that is one way of giving a hierarchical
alternative to the "random".
I think you can actually use a good deal of space to put your blog into a larger context. Your content is complex, take some time and space to demonstrate the scope. The blurb "a toolbox of methods in research and design" is a little hard to place; it could mean so many different things. So the only way I can get a feel for what your site is about is to read the headlines; or what I do, read the categories. And those are overwhelming without more structure.
Try using a large block of the top to create a browsing experience. Your subjects are interesting, but it is extremely important to put it into a larger contex.
i find it interesting that you write about networks, flowcharts, visual languages, systematics, conceptual mapping etc; surely you could apply this to the structure of the blog. Personally I am currently playing with the idea of creating a network-based browser for the content of one of my sites. I do not see why you could not try something similar:
This particular one is made in Gephi. I have also collected a pretty long list of data-visualisation tools that are out there.
There are many visual ways of creating an image-browser experience. I will mention some, a lot of them are covered in the link above. Some of these will work well as search terms.
Tag clouds (QI website)
Colour coding in some way. You can teach your readers that in your world, purple is math, logic, green is processes, orange is tutorials of whatever. You do not, of course, need to litter your site with colours; it is pretty strict in the design, but you can give subtle hints. This can be defined in css and attached to categories. Not very elegant example:
It is sometimes a question of teaching the audience a new way of seeing. I am all for it, as long as it adds value.
Oh, and a little comment on the visual language as it is; I would make the navigation a bit clearer, and do something with that search box. Again, since your blog spans enormously wide (kudos!), a prominent well styled search bar would be a good idea. The default ones in Bootstrap are not half bad.
Oh, and did I mention context?