Learning verbs

Hoffner and Melchert and van den Hout present Hittite morphology to their students in different sequences.  Van den Hout presents -mi and -ḫi verbs in the same first chapter, and later add verbs in different stems and featuring ablaut; Hoffner and Melchert's tutorial don't introduce the -ḫi verbs until nearly halfway through the course.  Van den Hout's approach is perhaps more complete--I get a full view of the verbal system.  Hoffner and Melchert choose an approach more in common with the development of the language--if the -ḫi conjugation is a later intrusion into the language, then a learner might be well-served treating it as later, and subsidiary, to the -mi conjugation.  Van den Hout also introduces perfects and mediopassives far earlier. 

Each tutorial presents the various verb classes in different orders, and I don't yet have the perspective on the language to know what order is best.  I do think back to how I learned Greek and Latin, which have much richer inflection systems--in those, authors have to teach verbs beginning with the present tense, and then move into more complex tenses and voices.  Because Hittite verb endings are fairly sparse, I've found it most important to learn them, and jump right into the rest.