I know that pathway to prayer has been very useful to many- most Judaica stores carry them
I recently acquired a Sefer written of the teachings of my great great grandfather who was not very well known (I think) and I read this little tidbit:
One should have in mind when saying ???? ?????, ???? ????, ????? ???? that Abraham is 5 letters, Isaac is 4 letters and Jacob is 4 letters adding up to 13 which correspond to the 13 attributes of mercy (??? ????)
The 3 ???? plus the vav in one of them are also a total of 13 letters and 13+13 is 26- which is hashems name of mercy
lema’an shemo be ahava can be read ?-???? since ahava is gimmatria 13 then 2 (?) times 13 (????) is also 26
There are lots more and I’m sure the above has a deep meaning way beyond my understanding but it’s nice nonetheless.