This blog post from Alison Varela discusses infinitives and infinitive phrases. It provides examples of infinitives like "to sleep" and "to wash" and explains that an infinitive phrase contains an infinitive plus other words, like "to help the poor people of the world." The post lists verbs that are commonly followed by infinitives rather than gerunds and provides additional resources on infinitives and gerunds. It notes that infinitives and gerunds can sometimes be used interchangeably without changing meaning.