The Torah contains not ten but 613 mitsvot and the last, but not the least of which is to write and own a Sefer Torah - not collectively, but a mitsvah that is incumbent upon every Jew.
In the past people did write or commission the writing of their own scroll. In our day the observance of this mitsvah is a rare phenomena. The high cost is prohibitive, limiting this to the wealthy only. Moreover very few individuals are capable, or more accurately, happy to take the not inconsiderable time to study the halacha of sofrut - the scribal laws - and develop the necessary calligraphic technique to produce an halachically acceptable scroll. Nonetheless Sefer HaChinuch - the book of instruction - has this as number 613 and the commandment is derived from D'varim , where it states, ‘and now write for yourself this song’ In context this probably refers to the song in close proximity to the statement - the poem of Ha-azinu, but is taken to mean the whole Torah by the rabbis.
Fortunately a statement within the Talmud (Menachot 30a) does at least afford the opportunity for people to have the status of the mitsvah accorded to them.
It reads, 'R. Sheshet said if one corrects even one letter it is considered as if he wrote [an entire Sefer Torah]' and adds: 'whoever writes a Sefer Torah, Scripture deems it as if he received it from Sinai'.
So on Lag Ba’Omer 5770 a Torah was given from Sinai to Ezra - that’s the Sinai just outside Newbury Park!