Friel's book is great I've just finished Base building for cyclists

I've only read it once but in an ideal world you will have at least 30 weeks till your first A priority event 6 weeks pre-base 12 weeks of base and 12 weeks of build tthne a peak week or 2

not always possible

I have one race left this year and Im' feeling a bit burnt out.... haven' really ridden much in 2-3 weeks and been using the weather as an excuse. I've decided after the race next weekend I'll just ride how I feel till mid November and then peak for July and Aug... hoping I can hold my peak for 6 weeks

in short both books are great but base building for cyclist go more indepth on building a solid base