Complex sentence: At age 13, he was given his first guitar, a Tatay, by his neighbor and soon afterward Gilmour started teaching himself to play using a book and record set by Pete Seeger.
Split into simpler sentences: At age 13, he was given his first guitar, a Tatay, by his neighbour. Soon afterward, Gilmour started teaching himself to play using a book and record set by Pete Seeger.