Reddit mentions of Bach - Six Suites for Violoncello Solo, BWV 1007 - 1012 (Bärenreiter Ausgabe 320)

Book wise, the two things I could not be without, both for initially learning technique and also revisiting as well are the Whitehouse Scale and Arpeggio Album (UK|US) and then also the Feuillard Daily Exercises (UK|US) (both Schott published).
Record yourself playing and watch it back, don't be afraid to use a metronome and a tuner.

Personally I'm looking in to learning to draw right now, but the approach is very similar for effective learning, focus on technical skills as they are the base to build off. Style is great to develop, but without the technique there to support it you could be building fundamentally poor habits. Things like bow control are honestly easier to understand when being observed, but Scales and Arpeggios will help you understand basic shapes you should form for each key helping you to not fear key signatures with more sharps and flats.

Feuillard is key to building all technical habits. The book is split in to 5 sections so you can focus on one part at a time, and once you've built up your skills can then mix and match exercises from each section to make sure you keep on top of everything. The book helps build a solid left hand, good transitions between hand positions, smoother bow control and for the bolder also working on thumb position technique.

It's imperative you have the cello tuned properly when you play, and from early on be relentless on ensuring you are in tune, so if necessary go very slowly and use a tuner to check each note is right before moving ahead. This will help train your ear to pick out when a note is not only out of tune, but better understand whether you are flat (under) or sharp (over). A good way to mix this would be using a tuner while you approach the first exercises in Feuillard as they focus on smaller shapes such as moving between two close notes. There are a great many free apps out there for smartphones that can help with tuning (personally use insTuner on iOS).

The other side to understand would be rhythm. Again, a good thing to revisit even if you have musical history elsewhere as it never hurts to check. Metronomes are an essential tool for learning in my opinion. When approaching a new piece of music it is best to ignore style initially to focus on accuracy. Once you know the music then you can play with how you want to present it, but until then, keeping a steady and consistent pace is a good habit to build. Again, many great free apps for this, (personally using Metronome by Soundbrenner on iOS). I'd personally recommend focusing on note accuracy before rhythm as a priority to ensure that what you're playing is correct before adding the pressure of time constraints through keeping tempo.

I started learning when I was 6, and for 10 years of learning through teachers my schools had there was a focus only on learning the music for each graded exam and barely any focus on the scales and arpeggios part and worse still no real focus on understanding technique beyond the music I would be examined with. It wasn't until 10 years later, well after finishing the graded system and getting a private teacher that I was completely pulled apart for my lack of technical understanding and foundation. From here I was told I had to get the two books I mentioned at the start and they formed the basis of not only my practice at home, but also each lesson I had with them. I noticed a rapid change in what I could do as a cellist though, seeing sight reading become incredibly more simple having the shapes and sounds already in my head. The movements and habits you build speed up your learning process everywhere else too, so technique always and first.

Lastly, even if you don't pursue a teacher right now, still get others opinions on how you are progressing, even if that means putting a recording of yourself and sharing it with other cellists to receive feedback. I've seen others do that here and until you build enough knowledge to be able to check yourself effectively, it's always good to get another's opinions on where you are at in case you subconsciously have been maybe avoiding improving on one skill or maybe even just need to return to another.

Hope that helps.

EDIT:
If you want a good selection of music to learn alongside technical development, baroque music in general is perfect for that given the way music and harmony was approached during that era of music, but I'd recommend the Bach Six Suites for Cello (Barenreiter BA 320 UK|US).

I'm a big fan of Patterns for Jazz for day to day exercises. Although the title indicates jazz music, this is a great exercise book for much of the harmony that you see running through rock, blues, jazz, and most popular music.

Another favorite of mine are the Bach Solo Cello Suites. I'd get the cello music rather than any transcriptions for bass. IMHO they all sound beautiful on bass and you'll run the gamut from relatively straightforward to very challenging.