Hi MCW and welcome , tips really are practice and learning all about how cryptic lues work.
take the above...
Psalm a bit revised relating to religious rite
As the definition usually comes at the beginning or end of the clue, we could be looking for a 'Psalm' or a'Religious rite'.
Next look through the clue - we see 'revised' which is an anagram indicator and knowing the length of the clue work from there.
Hence - anagram of 'Psalm a bit' - Baptismal.
I'm sure that is nowhere near enough to help you, but have fun learning as you go.