You asked
Best first lens for l mount?
Here is what the site says about that.
From Your first camera: Your first camera: A good phone is a very good camera in daylight. It does a lot of clever processing for you, and it's always in your pocket. So the honest first question is what a real camera would give you that your phone doesn't.
From cst1 likes cameras: Start from what you shoot: - Your first camera: when a phone stops being enough, and what to buy first. - Travel: small, light, and good at everything. - Street: small, quiet, and quick to shoot. - Portraits: fast lenses and good eye autofocus. - Landscape: wide lenses, a tripod, and weather sealing. - Wildlife and sport: long lenses and fast autofocus. - Video: the features that matter when it moves.
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