I have found scotlands people site to be very poor as these sites go. The search returns are very vague giving pages and pages of hits each of which you have to use your tokens to just view, then even more tokens to see the actual records.
I depends entirely what you are trying to find. See
http://www.rootschat.com/forum/index.php?topic=562668.0 for how to refine your search to get useful results.
If you want to research your Scottish family then love it or hate it, there is no alternative to SP. See
http://www.rootschat.com/forum/index.php?topic=714261.0There are lots of web sites with finding aids to help you home in on the information you want.
http://www.freecen.org.uk/ has most of the 1841 and 1851 census for much of Scotland, and
https://familysearch.org/search/collection/igi has indexes to baptisms and marriages to about 1874. However these are neither comprehensive nor 100% accurate, and they contain some spurious and downright misleading information, so must never be regarded as a substitute for the original documents which are available only on SP. Ancestry has transcriptions of the census, but these at notorious for transcription errors and cannot be relied on to be correct.
I searched for baptisms of Muir (soundex), father George, mother Jan*t, in Midlothian, Lasswade, between 1810 and 1841, and there are no matches. This means that the baptisms were either not recorded in the Church of Scotland parish registers, or if they were the records have not survived.
They could be in the Roman Catholic registers (on SP), or in one of the dissenting church registers in the National Records of Scotland, or in a register of the Episcopal Church which you would have to track down in either diocesan or some other archive.