It's not that it would be unsafe, but in my opinion it is still not really appropriate. You can always watch TV, if you're going to do LSD for the first time make sure you have a world to explore if you so choose, reading or watching a movie etc, all of that is a story you are being told. Much much better to live your own story. Don't worry that you will be bored, one of the most amazing things is how precious the mundane becomes.
About exploring that world: there are many ways to do it and many ways to interpret it - I don't necessarily mean you have to make a journey physically, like an adventure through the wilderness (although being outside is grand on psychedelics), that can obviously be challenging, easily too much. Just make sure you are much more free to go and do as you please. It should be pretty special that way.
If you are a bit more experienced you can play a little with your setting and try nighttime vs. daytime, being alone and/or being in a room doing very little (which is a step closer to sensory deprivation - limiting or narrowing your world so that you yourself generate other worlds inside of you), tripping at a festival, tripping with friends or together with someone dear to you - more therapeutically...
Don't get me wrong, all of that can be awesome, and sure that is how it can still work out well but differently if you have a more 'internal' trip... but when you start, get a good balance between being safe / comfortable (like home) and having a welcoming world around you (great example is during the day, with a house and backyard to yourself and a park in the neighborhood, during a nice sunny summer day). Not too static, not too dynamic.