Together with the whole family of Ubuntu flavors, in the last hours he made his presentation Lubuntu 15.04 Vivid Vervet, a variant that is the second to last that has become part of the range (it was officially presented in May 2011) and that is aimed at less powerful teams since is based on the Openbox window manager, the LXDE desktop and the GTK libraries to offer an agile, lightweight environment with good customization options.
Let's see then how to install Lubuntu 15.04, a process that in itself is quite similar to what has already been seen in the previous posts of this series but that it is worth repeating here, especially because there is some limitation that can complicate the process, and that is PAE ( physical address extension), which allows 32-bit systems to use up to 64 bits of physical memory. In general, most of the processors available on the market offer it, but it is worth mentioning this to be taken into account when starting the installation.
As we did when talking about Xubuntu 15.04, in this case we also choose to perform the download via BitTorrent to avoid congesting the servers, and then we record the ISO in a pendrive to be able to start our system with it. We do it, and the first thing we will see on the screen will be something like the following, where we are asked to choose the language of the installation.

We do it, and then we see a simpler screen than in the case of Xubuntu, where we have the options of 'Try Lubuntu without installing', 'Install Lubuntu', 'Check disk for defects', 'Check memory' y 'Boot from the first hard drive'.

We opted for the second, and we begin the installation, where we are shown the minimum recommendation in terms of available storage space (4,1 GB) and internet connection.

We accept this and go to the next screen where we have to select the type of installation, depending on whether we are going to erase the entire hard drive to use it with Lubuntu 15.04, or proceed to perform a manual partitioning to preserve data from a previous installation, etc.

Once decided we click on 'Continue' and we go to the selection screen of our location, where we must mark the time zone or zone in which we are.

New click on 'Continue' and now we have to enter the personal data (name, team name and username) as well as a password that we must choose very carefully and that of course we have to make sure we remember. Here we can also, as we see in the image below, select the option of 'Encrypt my personal folder', which is very useful for improve security in case of theft or loss of our equipment.

Click on 'Continue' and the installation itself begins, that of all the packages that will be part of our system. All this takes little time actually, since the total process does not take more than 8 or 10 minutes, and as we have seen so far, there are a few clicks to do it.

Then, already for daily use, we have the Lubuntu Software Center and the always useful Command line to be able to install those packages that we consider necessary, as well as do the same with the repositories that simplify our lives the most. I have opted for the download (via P2P, as I mentioned above) of the 64-bit 'desktop' installation, but both in this and in the 32-bit we have the possibility of opting for the desktop or alternate installation, so better go to the Lubuntu download page and choose.