I would recommend string lights. They are cheap and make your garden looks spectacular.

Nothing beats ground lights focused on trees, particularly if you have tall trees with long trunks.

I like up down lights on walls. Looks very chic and gives a great atmosphere.

If you have an outdoor patio with a ceiling on it, then there a huge choice of outdoor downlights and outdoor pendants now days.

In terms of ease of installation, cost and environment - nothing beats solar lights. They come in every type from spike lights, bollard lights, flood lights and even post lights.

If you have a favourite outdoor area, then a spotlight in a tree, shining down, looks great and provides for a very dramatic impact.

One thing that is very important is colour temperature which is how warm or cool the light is.

I prefer warm white (about 3000K) since that is much better for mood lighting. However cool white and daylight white are perceived as brighter by the human eye so give more safety.

Path lights are very in now, either in a series of spike lights or bollard lights. If you want easy path lighting, just stick in some solar spikes, it is a "DIY" job.

Consider putting in sensor lights to provide safety and light in the garden, but nor where people are sitting - as there is nothing more irritating than lights going on and off at random intervals.

For outdoor garden lights, 12V is much better than 240V as you can put the cable underground just slightly beneath the surface and there is no danger if it gets accidentally cut.

The decorative solar lamp posts fence posts are classy, so they don’t get outdated. You can position pieces of lamps on the top portion of the posts in every corner of the fence to illuminate the pathway for the homeowner, guests, and bystanders.