Proper Mineral Placement
For new Mappers, try to get as close as possible to them, as they will basically resolve any issue you might face with gameplay problems related to Mineral Lines, Harassment, Mining efficiency, etc.
Trying new Mineral lines should be something done for explicit reasons because very easily it can lead to Mining and gameplay issues to players, so try to avoid creating new non-standard Mineral lines when not required.
[b]Standard Mineral Placement[/b]
Standard Mineral Placements are the bread and butter of any map, they are of preferred use on Naturals, Thirds, Fourths, etc. Their main and only weakness is that this type of bases tend to use a considerable use of space, on those scenarios where bases are required to be placed under space constrains, it is left to the mapper to use his judgement on how to best achieve a good Mineral Line placement.
[b]Advanced Mineral Placements[/b]
Advanced Mineral Placements can be handy for Main base Mineral lines, in order to have both geysers be at the same side of a Mineral line, and this way ease the enemy scouting of gases, this way weakening Gas dependent Timing attacks and reducing the “Coin flip” nature of some of them.
Vespene Geysers have been shown to have a ~8% variance on gas income depending on their positioning relative to the Town Hall, the from 2012 to today changes to the pathing have been done to reduce this reality, but because of the Pythagoras the variance will always exist, as such, avoid placing Vespene Geysers on Non-Efficient positions without need.
[url=http://www.teamliquid.net/forum/sc2-strategy/378561-8-faster-gas-mining][b]~8% Faster Gas Mining Thread[/b][/url]
As stated, the Mineral lines above are the preferred way for any mappers to position resources, other layouts an be found on the older [url=http://www.teamliquid.net/forum/sc2-maps/381401-proper-mineral-placement]Proper Mineral Placement Thread[/url], and in the comments left by Mapmakers there, tho beware that the thread is highly outdated, and many of the comments, dont account for the later discovery of the ~8% Gas Mining efficiency.
There are several other Mineral Placements which also work well, such as the older [spoiler=HotS Standard Mineral Placements][url=https://i.imgur.com/N6AAOs5.jpg][img]https://i.imgur.com/wMb1lIf.jpg?1[/img][/url][/spoiler] and its variants.
Hopefully, this thread is clear and concise enough for new people getting into Mapmaking, which have trouble trying to find information about proper Mineral Line placements.