The 3.5mm analog jack should be an output at line level. This means that most headphones (not high-end audiophile headphones) should work well.
If you mean computer speakers, yes, they will work from that output as they are equipped with an internal amplifier. Larger speakers for home listening use will require a separate amplifier, as is the case with CD players, FM tuners, etc.
Just a note, this question may be considered off-topic for this forum as it is more concerned with home audio than audio production. I am not sure if stack exchange has a home entertainment forum. If not, it may be possible to suggest one.