Pronominal suffixes
Person is glued to nouns, prepositions, and some particles: my, your, his, our.
On nouns
סוּסִי my horse, סוּסוֹ his horse. The noun is in a construct-like state. Singular and plural bases take different suffix vowels. A chart in any first-year grammar is worth drilling.
my horse
your (ms) horse
his horse
his instruction
On prepositions
לִי to me, לְךָ to you, לוֹ to him; בּוֹ in him; אִתּוֹ with him. Some prepositions have special bound forms (עָלַי, אֵלֶיךָ).
to me
to you (ms)
with him
upon me
On verbs
Object suffixes attach to finite verbs (שְׁמָרַנִי he guarded me). They are a later reading skill; context already tells you the object in many verses.
Read next
Construct chains
Smikhut: two (or more) nouns in a row, the first in construct, the last carrying definiteness for the chain.
The direct object marker
אֵת (often אֶת) flags a definite direct object. It has no English word of its own.
The 100 most common words
A short list does most of the work in Biblical Hebrew. Particles and a handful of verbs open whole chapters.