(A)Read and bullet point the lesson but DO NOT read ANY of the example sentences. So you are really benefitting from the 'NUTSHELL' information.
(B)Read your bullet points and and commit to memory..including how to spell meilleures..etc do not gloss over!
Your bullet points should include:
(i) the guideline for all these 'terms' with ETRE it is the same throughout the lesson.
(ii) Pire--the adjective-- is the comparative forms of MAUVAISE
(III) PIRE ---the adverb is only used with ETRE.
(1V) So 'pire' the adjective means 'worse' (la pire the worst) and PIRE the ADVERB is only found with ETRE.
(C)Now read the entire lesson again. including the example sentences, you should have a clearer grasp of the choices made.
(D) Then go off in confidence and "soyez les meilleurs et faites bien vos comparatifs!!