We need to use the sequence adverbs. Recall that an adverb is a word that modifies a verb, an adjective or another adverb. So, we use them to describe the order in which two or more actions happen. Sequence adverbs help us understand the time relationship between sentences and ideas. In Spanish, these sequence adverbs are:
primero at first 
luego then, next 
entonces then, so 
por lo tanto thus 
finalmente finally
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So, let's use these adverbs in a Spanish paragraph:
Hoy fui al banco a depositar un cheque. Primero, llené mis datos y el monto en la ficha. Luego, me dirigí al cajero. Entonces, el cajero amablemente me atendió. Por lo tanto, pude hacer mi depósito. Finalmente, me fui a casa.