When not obscured by the Sun’s glare, all planets exept Neptune are visible to the naked eye. Where and when the planets are, depends on the location and time of the year on Earth, but you can determine planets by some criteria: Mercury is visible only infrequently, it looks like a star in the evening or morning twilight. Venus is brighter than anything in the sky, exept for the Moon. Mars has a red hue; Jupiter is brighter than any star; Saturn looks like a moderate to bright star; and Uranus is barely visible.
To be sure where to observe the planets, there are a lot of apps, that guide you in the Universe. I recomand SkyView. I used it a lot and I am very proud of the app.
Of course, you can watch the planets through a telescope or binoculars! If you really want a profesional telescope, a very good company is Meade
On 1 of Ferbruary I woke up at 4:00 am GTM+2 to watch Jupiter and the Moon. I also made some photos.
JUPITER WITH ITS 4 BIGGEST MOONS: GENYMEDE, CALLISTO, EUROPA and IO
Hope this article is helpful for you, space explorers!