Does such a thing as a completely pinyin tutorial exist everywhere? I am quite happy (or would be, if I had the time for this to be more than a theoretical exer

Does such a thing as a completely pinyin tutorial exist everywhere? I am quite happy (or would be, if I had the time for this to be more than a theoretical exercise) with ignoring the ideograms completely. ...when I was working in Beijing, with 45 minute tedious taxi journeys to and from work, I amused myself by trying to learn enough ideograms to puzzle out street signs. The only one I can remember now is 门, mén, which is 'gate'. Beijing had quite a lot.